full-disclosure - Re: Disk wiping -- An alternate approach?

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Message-ID: <2d6724811001260805m62a2ab83i9dc3d088687ebeb@mail.gmail.com>
Date: Tue, 26 Jan 2010 11:05:27 -0500
From: T Biehn <tbiehn@...il.com>
To: Michael Holstein <michael.holstein@...ohio.edu>
Cc: full-disclosure <full-disclosure@...ts.grok.org.uk>
Subject: Re: Disk wiping -- An alternate approach?

Entropy vs zeros vs random content.

Plausible deniability will only be there if there is legitimate data
that looks like it's been used and the prosecutor cannot construe any
of your data as that used for wiping or otherwise obscuring the data
on your drive. If you don't have this you better request a trial by
judge rather than jury.

Now;
Your best solution is to use an exterior OS on FDE, then, in a TC
Hidden Disk container have a VM image that you use for 'hidden works.'
You can hand over your FDE's PW and location of TC disk including the
exterior password for great fed win.

-Travis

On Tue, Jan 26, 2010 at 10:08 AM, Michael Holstein
<michael.holstein@...ohio.edu> wrote:
>
>> By the way, does somebody knows about the flash memory?
>> Is zeroing a whole usb key enough to make the data unrecoverable?
>>
>
> No, wear-leveling (done at the memory controller level) will dynamically
> re-map addresses on the actual flash chip to ensure a relatively
> consistent number of write cycles across the entire drive.
>
> The only way to completely "wipe" a flash disk is with a hammer.
>
> Regards,
>
> Michael Holstein
> Cleveland State University
>
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